The influence of grooves on the behavior of steel tube shock absorbers
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Major function of railway vehicles absorbers is to absorb energy through controlled deformation during frontal rail vehicle collisions. The results presented and discussed in this paper is a part of the research of one particular type of absorber consist of a thin-walled seamless tube and conical mandrel. The influence of the groove, which occurred during cold worked tube manufacturing, on the behavior and energy absorption of this type of shock absorber is analyzed. The coupled nonlinear Finite Element Analysis is used for calculation of stress-strain state and plastic deformation work/volume of tube absorbers with defects. The results of the research presented in this paper show that the grooves on outer surface of expansion tubes in some cases can be beneficial due to strain hardening process in root of stress concentrator i.e. defect. The beneficial effect of grooves is proven by simulation in which is obvious that the energy absorbed level could be higher on expansion tube with gr...ooves.
Keywords:
energy absorbers / cold working tubes / nonlinear Finite Element AnalysisSource:
Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia, 2019, 1-6Funding / projects:
- Dynamics of hybrid systems with complex structures. Mechanics of materials. (RS-174001)
- Development of Methodology for Improvement of Operational Performance, Reliability and Energy Efficiency of Machine Systems used in the Resource Industry (RS-35029)
- Software development for coupled multiphysics problems (RS-32036)
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Institut za ispitivanje materijalaTY - CONF AU - Atanasovska, Ivana AU - Momčilović, Dejan AU - Vulović, Snežana PY - 2019 UR - http://rims.institutims.rs/handle/123456789/467 AB - Major function of railway vehicles absorbers is to absorb energy through controlled deformation during frontal rail vehicle collisions. The results presented and discussed in this paper is a part of the research of one particular type of absorber consist of a thin-walled seamless tube and conical mandrel. The influence of the groove, which occurred during cold worked tube manufacturing, on the behavior and energy absorption of this type of shock absorber is analyzed. The coupled nonlinear Finite Element Analysis is used for calculation of stress-strain state and plastic deformation work/volume of tube absorbers with defects. The results of the research presented in this paper show that the grooves on outer surface of expansion tubes in some cases can be beneficial due to strain hardening process in root of stress concentrator i.e. defect. The beneficial effect of grooves is proven by simulation in which is obvious that the energy absorbed level could be higher on expansion tube with grooves. C3 - Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia T1 - The influence of grooves on the behavior of steel tube shock absorbers EP - 6 SP - 1 UR - https://hdl.handle.net/21.15107/rcub_rims_467 ER -
@conference{ author = "Atanasovska, Ivana and Momčilović, Dejan and Vulović, Snežana", year = "2019", abstract = "Major function of railway vehicles absorbers is to absorb energy through controlled deformation during frontal rail vehicle collisions. The results presented and discussed in this paper is a part of the research of one particular type of absorber consist of a thin-walled seamless tube and conical mandrel. The influence of the groove, which occurred during cold worked tube manufacturing, on the behavior and energy absorption of this type of shock absorber is analyzed. The coupled nonlinear Finite Element Analysis is used for calculation of stress-strain state and plastic deformation work/volume of tube absorbers with defects. The results of the research presented in this paper show that the grooves on outer surface of expansion tubes in some cases can be beneficial due to strain hardening process in root of stress concentrator i.e. defect. The beneficial effect of grooves is proven by simulation in which is obvious that the energy absorbed level could be higher on expansion tube with grooves.", journal = "Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia", title = "The influence of grooves on the behavior of steel tube shock absorbers", pages = "6-1", url = "https://hdl.handle.net/21.15107/rcub_rims_467" }
Atanasovska, I., Momčilović, D.,& Vulović, S.. (2019). The influence of grooves on the behavior of steel tube shock absorbers. in Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia, 1-6. https://hdl.handle.net/21.15107/rcub_rims_467
Atanasovska I, Momčilović D, Vulović S. The influence of grooves on the behavior of steel tube shock absorbers. in Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia. 2019;:1-6. https://hdl.handle.net/21.15107/rcub_rims_467 .
Atanasovska, Ivana, Momčilović, Dejan, Vulović, Snežana, "The influence of grooves on the behavior of steel tube shock absorbers" in Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia (2019):1-6, https://hdl.handle.net/21.15107/rcub_rims_467 .